CVE-2026-28476
Received Received - Intake
Server-Side Request Forgery in OpenClaw Tlon Urbit Extension

Publication date: 2026-03-05

Last updated on: 2026-04-21

Assigner: VulnCheck

Description
OpenClaw versions prior to 2026.2.14 contain a server-side request forgery vulnerability in the optional Tlon Urbit extension that accepts user-provided base URLs for authentication without proper validation. Attackers who can influence the configured Urbit URL can induce the gateway to make HTTP requests to arbitrary hosts including internal addresses.
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Meta Information
Published
2026-03-05
Last Modified
2026-04-21
Generated
2026-06-16
AI Q&A
2026-03-06
EPSS Evaluated
2026-06-15
NVD
CVE-2026-28476
EUVD
EUVD-2026-9922
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
openclaw openclaw to 2026.2.14 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-918 The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.
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Executive Summary

This vulnerability exists in OpenClaw versions prior to 2026.2.14 and involves a server-side request forgery (SSRF) issue in the optional Tlon Urbit extension.

The extension accepts user-provided base URLs for authentication without properly validating them, allowing attackers who can influence the configured Urbit URL to cause the gateway to make HTTP requests to arbitrary hosts, including internal network addresses.

Impact Analysis

An attacker exploiting this vulnerability can induce the server to send HTTP requests to arbitrary hosts, potentially including internal systems that are not normally accessible externally.

This can lead to unauthorized access to internal resources, information disclosure, or further attacks within the internal network.

However, the vulnerability does not directly impact confidentiality but can affect the integrity of the system by allowing attackers to manipulate internal communications.

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